Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quando Oliver Jarvis teve a pole position?
 ###Tabelas: CREATE TABLE race_calendar_and_results (race_calendar_and_results_id AUTO_INCREMENT PRIMARY KEY, Round INT, Circuit VARCHAR, Date VARCHAR, Pole position VARCHAR, Fastest lap VARCHAR, Winning driver VARCHAR, Winning team VARCHAR) CREATE TABLE minnesota (minnesota_id AUTO_INCREMENT PRIMARY KEY, District VARCHAR, Incumbent VARCHAR, Party VARCHAR, Elected INT, Status VARCHAR, Opponent VARCHAR) CREATE TABLE quarter-finals:___1_vs._nashville_predators_8 (quarter-finals:___1_vs._nashville_predators_8_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Visitor VARCHAR, Score VARCHAR, Home VARCHAR, Decision VARCHAR, Attendance INT, Series VARCHAR) CREATE TABLE practice_times_and_leaderboard_600cc (practice_times_and_leaderboard_600cc_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Rider VARCHAR, Sat 29 May VARCHAR, Mon 31 May VARCHAR, Tues 1 June VARCHAR, Wed 2 June VARCHAR, Thurs 3 June VARCHAR, Fri 4 June VARCHAR) CREATE TABLE college_statistics (college_statistics_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Team VARCHAR, Attempts VARCHAR, Completions VARCHAR, Completion % VARCHAR, Yards VARCHAR)  
SELECT Date FROM race_calendar_and_results WHERE Pole position = Oliver Jarvis